F12 Cycles render 8x slower than the same render started from commandline #63249

Closed
opened 2019-04-03 15:48:47 +02:00 by Vaclav Cermak · 14 comments

System Information
Operating system: Ubuntu 18.04 64bit
Graphics card: GeForce GTX TITAN X (GM200), GeForce GTX 1080 Mobile (same behavior on both)

Blender Version
Broken: 2.80beta 17c15798c3, 2.79b (same behavior with both)

Short description of error
When I start render from commanline, it is about eight times faster than the same render started by pressing F12 in Blender GUI.

Exact steps for others to reproduce the error
Try to open attached scene and run render by F12. Then try it from commanline by running

blender -b zzTmp-render-test2.blend -f 1

zzTmp-render-test2.blend

**System Information** Operating system: Ubuntu 18.04 64bit Graphics card: GeForce GTX TITAN X (GM200), GeForce GTX 1080 Mobile (same behavior on both) **Blender Version** Broken: 2.80beta 17c15798c35f, 2.79b (same behavior with both) **Short description of error** When I start render from commanline, it is about eight times faster than the same render started by pressing F12 in Blender GUI. **Exact steps for others to reproduce the error** Try to open attached scene and run render by F12. Then try it from commanline by running ``` blender -b zzTmp-render-test2.blend -f 1 ``` [zzTmp-render-test2.blend](https://archive.blender.org/developer/F6909078/zzTmp-render-test2.blend)
Author

Added subscriber: @VaclavCermak

Added subscriber: @VaclavCermak

Added subscribers: @brecht, @ZedDB

Added subscribers: @brecht, @ZedDB

This is not that odd, right @brecht?

This is not that odd, right @brecht?

Added subscriber: @tnt-man

Added subscriber: @tnt-man

maybe because in blender it also shows the image

maybe because in blender it also shows the image
  • Does it help to select GLSL under Preferences > Viewport > Textures > Image Display Method?
  • Does it help to hide the image editor showing the render?
* Does it help to select GLSL under Preferences > Viewport > Textures > Image Display Method? * Does it help to hide the image editor showing the render?
Author

So displaying image takes about seven times its render time?

So displaying image takes about seven times its render time?
Author

2 Brecht>

  • No

  • Seems that no. Tried to switch from image editor to 3D view and after some time back. Remaining render time didn't improved.

2 Brecht> * No * Seems that no. Tried to switch from image editor to 3D view and after some time back. Remaining render time didn't improved.

Added subscriber: @Anvilarion

Added subscriber: @Anvilarion

Removed subscriber: @Anvilarion

Removed subscriber: @Anvilarion

@brecht do you want to take a look at this?

@brecht do you want to take a look at this?

Added subscriber: @MaciejJutrzenka

Added subscriber: @MaciejJutrzenka

Changed status from 'Open' to: 'Archived'

Changed status from 'Open' to: 'Archived'
Maciej Jutrzenka self-assigned this 2019-11-26 17:02:21 +01:00

did multiple projects in 2.81 where blendfile was over 2gb and didn't had such issiues.. i am closeing probably it got fixed over the time...

did multiple projects in 2.81 where blendfile was over 2gb and didn't had such issiues.. i am closeing probably it got fixed over the time...
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Reference: blender/blender#63249
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